Device for guarding mispolarization of inductive loads

Details Device for guarding mispolarization of inductive loads Device for guarding mispolarization of inductive loads

1999-02-16

2000-10-03

Jackson, Stephen W.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

327110, 361 84, H01H 4700, H01H 8300

Patent

active

061277452

ABSTRACT:
A device for switching inductive loads includes a series circuit which is connected between positive and negative poles of voltage source and has a load and a switch associated with the load. A free-running diode is connected parallel to the load. A guard circuit for guarding against mispolarization of the voltage source has an electronic switch connected in series with the free-running diode. The electronic switch is made conducting through a charge pump triggered by an oscillator, given correct polarization of the voltage source.

REFERENCES:
patent: 4178619 (1979-12-01), Seiler et al.
patent: 5519557 (1996-05-01), Kopera, Jr. et al.

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